Flexible pipe-joint.



PATENTED NOV. 14, 1905.

J. GOPPBRSMITH.

FLEXIBLE PIPE JOINT. APPLIOATION FILED MAR. 21. 1.904.

I wi/bvw/owo Gum/W243 UNITED STATES JACOB OOPPERSMITH, OF OOLLINWOOD,OHIO, ASSIGNOR OF ONE-HALF PATENT OFFICE.

TO MARTIN STEINER, OF ERIE, PENNSYLVANIA.

FLEXIBLE PIPE-JOINT.

Specification of Letters Patent.

Patented NOV. 14, 1905.

Application filed March 21,1904. Serial No. 199,156.

flexible joint which under all conditions of pressure will remain tightand one that will automatically take up its wear.

In the accompanying drawing the members of the joint are marked,respectively,A and B. The member A has secured on it the flangenut (0,having the interiorly-extending flange a. A jointsurface a is arrangedon this flange a, said surface facing the body of the member A, withwhich it is formed. The member B has the flange-nut I), with theoutwardlyextending flange Z), on which is a joint-surface 6 arranged tobe brought into contact with the joint-surface (4 It will readily beseen that these joint-surfaces are interlocked, so as to secure themembers A and B together. An outlet 6 extends from. the member B, andoutlet ci extends from the member A. Itwill readily be seen that as thisjoint is subjected to fluid-pressure the surfaces a and b are forcedinto closer contact as the pressure increases, so that the joint willsustain practically any pressure to which it may be subjected Within thelimits of its strength.

It is desirable to keep the surfaces (0 and Z2 in contact at all timesin order to prevent dirt from lodging on said surfaces. This of coursewill create wear and to some extent impair the utility of the joint. Toavoid this, I provide the member A with the lug a and the member B withthe lug 6 These project up into the passage formed in the members. Theyare provided with the sockets a and birespectively. A pin O is arrangedin these sockets, and a spring D arranged around the pin and tensionedagainst the lugs and 6 so as to force the surfaces a and 6 into contactat all times.

The pin O preferably makes a sufficiently close fit with the sockets Land a to maintain the members A and B in axial alinement and concentricwith each other.

While this joint'has utility where used alone, its principal utility isin connection with the other joints, the axes of which are arranged atan angle. I show such a joint, E.

Where aseries of these joints are connected together, they perform thesame function as a rubber hos'eas, for instance, the rubber hose usedbetween cars-and as they automatically take up their wear they will lastfor a long period.

What I claim as new is- 1. A flexible pipe-joint, comprising thetwomembers A and B, the member A having the flange-nut a, from whichextends the flange a,

the flange being provided with a wearing-surface a facing the body ofthe member A, and approximating a plane at right angles to the axis ofthe joint, the member B having the flange-nut b from which extends theflangeshoulder b, on which is the wearing-surface 6 facing the body ofthe member B and contacting the surface a to complete the joint, thecontact-pressure on the surfaces ar and o varying with thefluid-pressure in the joint; substantially as described. 2. A flexiblepipe-joint, comprising the two members A and B, the member A having theflange-nut a, from which extends the flange a, the flange being providedwith a wearing-surface (0 facing the body of the member A, andapproximating a plane at right angles to the axis of the joint, themember B having the flange-nut I) from which extends the flangeshoulderZ), on which is the wearing-surface 5 facing the body of the member Band contacting the surface a to complete the joint, the contact-pressureon the surfaces 0 and b varying with the fluid-pressure in the joint,and a spring for maintaining said surfaces 64 and 72 in contact;substantially as described.

3. In a flexible pipe-joint the combination of the members A and B, themember A having the flange-nut awith the surface a thereon; the member Bhaving the flange-nut b with the joint-surface 72 thereon, the surfaces(4 and being opposed to each other, and interlocked to secure themembers of the joint together, said members being provided with opposinglugs and sockets within the joint; a pin O in the sockets; and a springD for forcing the members apart.

4. A flexible pipe -joint comprising two members having interlocked annularjoint-surfaces arranged to be forced toward each other by pressurein the joint, the. joinb-surfafilesof In testirngny whereof T- hevehereunto set each member facing the body of the member my hand in thepresence of two subscribing on which it is formed, a separate guidingwitnesses.

means at the exi sbfand wholly within the JACOB COPPERSMITH. 5 Walls ofthe joint, for maintaining the mem- 'Witnesses:

bers in axial alinem'ent; substantiellyasde- J. R. CRAIG,

scribed. M. C. SULLIVAN.

